Get smoke simulation to observe emitter's pose?
I know the smoke sim has changed a lot recently, but it used to have a modifier on the modifier stack. It's possible that your smoke sim's modifier is above the armature modifier in the modifier stack, IWC the smoke sim is getting calculated, THEN the pose is getting calculated.

It also looks like the t-pose figure is a little bigger than the other. If that's the case, you should make sure your scale is applied on the model and the rig.

Hope that helps!